A182010 Number of potential group developed cocyclic Hadamard matrices over Z_{(2*n+1)^2} X Z^2_2.

8, 398297088, 913318229998415698350080000, 18602466189203099377637961636627003234293304602017169408

Offset: 0

Author

L. Edson Jeffery, Apr 11 2012

Keywords

• nonn

Links

• A. Baliga and K. J. Horadam, Cocyclic Hadamard matrices over Z_t X Z^2_2, Australas. J. Combin. 11(1995), 123-134.

Crossrefs

Cf. A109901.

Formula

a(n) = 8*A109901(2*n+1)^4 ([Baliga, et al., p. 130]).